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Ring necked parakeet and London survey

Observed: 5th December 2009 By: Stacey CougillStacey Cougill’s reputation in Birds
Species interactions

No interactions present.


Stacey Cougill's picture

More information about the survey......

Researchers from the Biology Department of Imperial College, London need accurate estimates of the current population size of the Ring-necked Parakeet in Britain, to help in calculating its growth rate. The last census, in 2001/2, adjusted for the growth rates that they estimated at the time, gives a current estimate of 20,000–50,000 individuals.

To estimate the current population size, a large-scale roost count will be carried out on Sunday 3 January 2010. It, will take place simultaneously across as many known roosts as possible, using the same methods at all sites. If judged to be successful, the count will be repeated every three months to enable researchers to estimate the population growth rate and any changes in roost usage.

Imperial College are looking for volunteers who would be willing to assist with compiling a list of all known roost sites and/or assisting with the first roost count on Sunday 3 January 2010. Counts will begin two hours before sunset (14:04 on 3 Jan) and will continue for half an hour after sunset (16:34). The intention is to have several people counting at each site in order to control for individual error and allow cover for all entry routes into the roost.

No experience is necessary to assist with the count and a full and clear protocol, along with data collection sheets, will be provided. The data collected during these counts will be prepared for publication in relevant journals and will be widely publicised.

If you are interested in helping, or would like more information, then please email:

iSpot Biodiversity Mentor - London